Hack-A-Tune is a wearable beat-machine vest that comes complete with an LED visualizer light show! Tap away at the four buttons hidden by your pocket to select notes to insert into the looping track, even ahead of the music! Hack-A-Tune supports one octave at a time across 8 beats. The user has control over the key of the track as well as the light display. A must-have for music hackers on the go!